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cc2538: spi: Do not call SPI_WAITFOREORx() at end of init

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If the SSI has never been used and spi_init() is called, then the SSI receive
FIFO is empty and remains so, so calling SPI_WAITFOREORx() at the end of
spi_init() waits endlessly for SSI_SR.RNE to be set. Hence, this call must be
removed in order to avoid a deadlock.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
This commit is contained in:
Benoît Thébaudeau 2013-11-04 16:12:35 +01:00
parent a6227e1e3e
commit f34731c1a9
1 changed files with 0 additions and 3 deletions
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cpu/cc2538/dev/spi.c
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@ -91,8 +91,5 @@ spi_init(void)
/* Enable the SSI */ /* Enable the SSI */
REG(SSI0_BASE + SSI_CR1) |= SSI_CR1_SSE; REG(SSI0_BASE + SSI_CR1) |= SSI_CR1_SSE;
/* Clear the RX FIFO */
SPI_WAITFOREORx();
} }
/** @} */ /** @} */